WELL known to European tourists but passed by most globe trotters —who in their hurried journey across seas and continents, have no time to bestow on anything outside of the beaten tracks—are the salt mines of Wieliczka, Galicia, whose origin is lost in the darkness of the times, while their history is traced to about 1000 A. D. After being temporarily abandoned as a consequence of Tartar incursions and the resulting depopulation and impoverishment of the country, they were restored during the reign of Boleslas by immigrating Hungarian miners.

Polish Plane Packs Guns in Its Pants
War planes now even carry guns in their “pants.” The illustration at right, of a new Polish fighting craft, shows how a machine gun is attached to the streamline fairing of the undercarriage. Like other guns installed in the plane, it is fired by remote control from the cockpit, as the pilot points his machine head-on at the target. In contrast, designers of American fighting planes prefer to mount the guns elsewhere, so that the landing gear may be retracted in flight for less wind resistance and greater speed.